CN110395087A - A kind of vehicle intelligent air conditioning control method and system based on fuzzy-adaptation PID control - Google Patents
A kind of vehicle intelligent air conditioning control method and system based on fuzzy-adaptation PID control Download PDFInfo
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- CN110395087A CN110395087A CN201910701585.2A CN201910701585A CN110395087A CN 110395087 A CN110395087 A CN 110395087A CN 201910701585 A CN201910701585 A CN 201910701585A CN 110395087 A CN110395087 A CN 110395087A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
- B60H1/00—Heating, cooling or ventilating [HVAC] devices
- B60H1/00642—Control systems or circuits; Control members or indication devices for heating, cooling or ventilating devices
- B60H1/00735—Control systems or circuits characterised by their input, i.e. by the detection, measurement or calculation of particular conditions, e.g. signal treatment, dynamic models
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
- B60H1/00—Heating, cooling or ventilating [HVAC] devices
- B60H1/00642—Control systems or circuits; Control members or indication devices for heating, cooling or ventilating devices
- B60H1/00814—Control systems or circuits characterised by their output, for controlling particular components of the heating, cooling or ventilating installation
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
- B60H1/00—Heating, cooling or ventilating [HVAC] devices
- B60H1/00642—Control systems or circuits; Control members or indication devices for heating, cooling or ventilating devices
- B60H1/00814—Control systems or circuits characterised by their output, for controlling particular components of the heating, cooling or ventilating installation
- B60H1/00878—Control systems or circuits characterised by their output, for controlling particular components of the heating, cooling or ventilating installation the components being temperature regulating devices
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/80—Technologies aiming to reduce greenhouse gasses emissions common to all road transportation technologies
- Y02T10/88—Optimized components or subsystems, e.g. lighting, actively controlled glasses
Abstract
The present invention relates to a kind of vehicle intelligent air conditioning control method and system based on fuzzy-adaptation PID control, the described method comprises the following steps: acquiring the vehicle interior temperature of current vehicle；The vehicle interior temperature of current vehicle is subjected to selection operating mode compared with target temperature；Calculate the temperature gap of vehicle interior temperature and target temperature；When temperature gap is greater than the first preset value, then the operating power for exporting air-conditioning is the maximum service rating of air-conditioning；When temperature gap is less than the second preset value, then the operating power for exporting air-conditioning is the minimum operating power of air-conditioning；When temperature gap is greater than the second preset value less than the first preset value, then temperature gap is inputted as the input quantity of PID controller, exports the operating power of air-conditioning；Control air-conditioning works according to the operating mode of selection and the operating power of output.The comfort of occupant is improved, while vehicle interior temperature carries out exporting different operating powers from the difference of target temperature, and then realizes energy conservation.
Description
Technical field
The present invention relates to intelligent automobile field, in particular to a kind of vehicle intelligent airconditioning control based on fuzzy-adaptation PID control
Method and system.
Background technique
With the development of science and technology with the raising of living standard, requirement of the people to vapour environment inside car quality is increasingly
Rise, unprecedented attention is also reached for the performance requirement of on-board air conditioner.The air-conditioning that automobile carries at this stage is broadly divided into
Manual air conditioner automatic air condition.
Manual air conditioner is realized by adjusting thermoregulation knob, and thermoregulation knob is reached by changing the mixed proportion of cold-hot wind
Adjust the purpose of temperature, wherein cold wind source is A/C evaporator, and the source of hot wind is then the waste heat of engine (for tradition
Internal-combustion engines vehicle) it is heated with heat exchanger.The compressor horsepower of this kind of air-conditioning is in higher state always, carries out temperature using hot wind
Degree, which is offset, carrys out climate comfort, causes biggish energy waste.Meanwhile manual air conditioner cannot well maintain vehicle interior temperature
Near the smaller range of a certain temperature, the larger fluctuation of temperature is unfavorable for passenger comfort.
Automatic air condition can be automatically adjusted according to the operating mode of user's selection and the temperature of setting.At this stage certainly
The complicated multiplicity of the control method of dynamic air-conditioning, respectively there is superiority and inferiority.
For example, a kind of " intelligent control system of the on-board air conditioner based on fuzzy control of Patent No. 201310442912.X
System and method ", a kind of auto Air Conditioner control method based on fuzzy control is proposed, only considers interior Current Temperatures
It is inputted with the difference of target temperature as controller, controller output quantity is control air door executer, speed regulation module of fan, compression
The actuator control amount of machine clutch switch, water-heating valve.The input parameter of consideration is very few, does not consider other environmental factors for temperature
The influence of degree.The control mode of each output quantity realizes that the calculating for having aggravated automobile controller significantly is negative by fuzzy control
Load.
For example, " the pure electric automobile air conditioning compressor control based on fuzzy control of Patent No. 201310086658.4
Method and system ", propose it is a kind of propose a kind of auto Air Conditioner control method based on fuzzy control, equally with car
The difference of Current Temperatures and target temperature is inputted as controller, and controller output is only compressor rotary speed one, while not being examined
Consider heating mode, the positioning relative to automatic air condition, it is clear that the case where consideration is very few.
Other algorithms, also be to automatically control there are full content, including air output, this makes the comfort of passenger
It may be greatly reduced.
Summary of the invention
For this reason, it may be necessary to provide a kind of vehicle intelligent air conditioning control method and system based on fuzzy-adaptation PID control, solve existing
The temperature manually adjusted cannot be stablized in the smaller range of a certain temperature, and comfort is poor, and compressor refrigeration effect fails completely
It is applied, causes the comfort for not considering user in energy waste, and automatic adjustment, to consider that energy conservation, and control are calculated
The problem of method is lengthy and jumbled, requires height to controller, increases manufacturing cost.
To achieve the above object, a kind of vehicle intelligent air conditioning control method based on fuzzy-adaptation PID control is inventor provided,
The following steps are included:
Acquire the vehicle interior temperature of current vehicle；
The vehicle interior temperature of current vehicle is subjected to selection operating mode compared with target temperature, when vehicle interior temperature is greater than target
When temperature, then refrigeration mode is selected, when vehicle interior temperature is less than target temperature, then selects heating mode；
After selecting refrigeration mode or heating mode, the temperature gap of vehicle interior temperature and target temperature is calculated；
When temperature gap is greater than the first preset value, then the operating power for exporting air-conditioning is the maximum service rating of air-conditioning；
When temperature gap is less than the second preset value, then the operating power for exporting air-conditioning is the minimum operating power of air-conditioning；
When temperature gap is greater than the second preset value less than the first preset value, then input of the temperature gap as PID controller
Amount input, exports the operating power of air-conditioning；
Control air-conditioning works according to the operating mode of selection and the operating power of output.
It advanced optimizes, described " temperature gap that will be calculated is inputted as the input quantity of PID controller, and output is empty
It is further comprising the steps of after the operating power of tune ":
Scaling, the final work function of output air-conditioning are carried out to the operating power that PID controller exports according to outlet air coefficient of discharge
Rate, locating outlet air coefficient of discharge are inversely proportional with air output, and value range is (0,1).
It advanced optimizes, it is described " after selection refrigeration mode or heating mode, to calculate the temperature of vehicle interior temperature and target temperature
Difference inputs the temperature gap being calculated as the input quantity of PID controller, exports the operating power of air-conditioning " specifically wrap
Include following steps:
When selecting operating mode for refrigeration mode, then outside temperature and amount of sunlight are acquired, by the collecting vehicle of acquisition
The input of outer temperature and amount of sunlight as fuzzy controller, then fuzzy controller exports pid parameter；
PID controller is adjusted according to the pid parameter of output, then using the temperature gap being calculated as adjustment
The input quantity of PID controller afterwards inputs, and exports the operating power of air-conditioning.
It advanced optimizes, it is described " after selection refrigeration mode or heating mode, to calculate the temperature of vehicle interior temperature and target temperature
Difference inputs the temperature gap being calculated as the input quantity of PID controller, exports the operating power of air-conditioning " it goes back later
The following steps are included:
When operating mode is refrigeration mode, the speed of current vehicle and the revolving speed of compressor are acquired, by current vehicle
Input of the revolving speed of speed and compressor as fuzzy controller calculates the revolving speed of the radiator fan of output air-conditioning；
The radiator fan of control air-conditioning works according to the revolving speed of output.
It advanced optimizes, it is described " after selection refrigeration mode or heating mode, to calculate the temperature of vehicle interior temperature and target temperature
Difference inputs the temperature gap being calculated as the input quantity of PID controller, exports the operating power of air-conditioning " it goes back later
The following steps are included:
When operating mode is heating mode, the humidity in collecting vehicle；
Judge whether the humidity of acquisition is greater than default humidity；
If more than default humidity, then controls air-conditioning and open dehumidification function.
Inventor additionally provides another technical solution: a kind of vehicle intelligent air-conditioning system based on fuzzy-adaptation PID control,
It is characterized in that, including data acquisition device, processor, PID controller and air-conditioning；
The data acquisition device is used to acquire the vehicle interior temperature of current vehicle；
The processor is used to the vehicle interior temperature of acquisition carrying out selection operating mode compared with target temperature, when interior temperature
When degree is greater than target temperature, then refrigeration mode is selected, when vehicle interior temperature is less than target temperature, then selects heating mode；Selection
After refrigeration mode or heating mode, the temperature gap of vehicle interior temperature and target temperature is calculated；It is preset when temperature gap is greater than first
When value, then the operating power for exporting air-conditioning is the maximum service rating of air-conditioning；It is when temperature gap is less than the second preset value, then defeated
The operating power of air-conditioning is the minimum operating power of air-conditioning out；When temperature gap is greater than the second preset value less than the first preset value,
Then temperature gap is inputted as the input quantity of PID controller；
The PID controller is used to export the operating power of air-conditioning according to the temperature difference of input；
The air-conditioning according to the operating mode of selection and the operating power of output for working.
Advanced optimize, the operating power that the processor is also used to export PID controller according to outlet air coefficient of discharge into
Row scaling, the final operating power of output air-conditioning, locating outlet air coefficient of discharge are inversely proportional with air output, and value range is (0,1).
It advanced optimizes, further includes fuzzy controller；
The data acquisition device is also used to acquire outside temperature and amount of sunlight；
Then the outside temperature and amount of sunlight that the fuzzy controller is used to acquire export PID as input quantity
Parameter；
Pid parameter that the PID controller is also used to be exported according to fuzzy controller and as the temperature gap of input quantity,
Export the operating power of air-conditioning.
It advanced optimizes, further includes fuzzy controller；
The data acquisition device is also used to acquire the speed of current vehicle and the revolving speed of compressor；
The fuzzy controller is used for the input using the revolving speed of the speed of current vehicle and compressor as fuzzy controller,
Calculate the revolving speed of the radiator fan of output air-conditioning；
The revolving speed control radiator fan work for the radiator fan that the air-conditioning is also used to be exported according to fuzzy controller.
It advanced optimizes, the data acquisition device is also used to when operating mode be heating mode, the humidity in collecting vehicle；
The processor is also used to judge whether the humidity of acquisition is greater than default humidity, then controls sky if more than default humidity
It tunes to open and opens dehumidification function.
Be different from the prior art, above-mentioned technical proposal, by acquiring vehicle interior temperature, by vehicle interior temperature and target temperature into
Row relatively carries out selection operating mode, using the difference of vehicle interior temperature and target temperature as the input quantity of PID controller, carries out defeated
The operating power of air-conditioning out, air-conditioning work according to the operating mode of selection and the operating power of output, can be by interior temperature
Degree is stablized in a lesser range, improves the comfort of occupant, while the progress of the difference of vehicle interior temperature and target temperature is defeated
Different operating power out, and then realize energy conservation, and it is lengthy and jumbled to reduce control algolithm using PID controller, is reduced pair
Production cost is saved in the requirement of controller.
Detailed description of the invention
Fig. 1 is a kind of process of the vehicle intelligent air conditioning control method based on fuzzy-adaptation PID control described in specific embodiment
Schematic diagram；
Fig. 2 is a kind of structural representation of the vehicle intelligent air-conditioning system based on fuzzy-adaptation PID control described in specific embodiment
Figure；
Fig. 3 is a kind of working principle of the vehicle intelligent air-conditioning system based on fuzzy-adaptation PID control described in specific embodiment
Schematic diagram.
Description of symbols:
210, data acquisition device；
220, processor；
230, PID controller；
240, air-conditioning；
250, fuzzy controller.
Specific embodiment
Technology contents, construction feature, the objects and the effects for detailed description technical solution, below in conjunction with specific reality
It applies example and attached drawing is cooperated to be explained in detail.
Referring to Fig. 1, present embodiments providing a kind of vehicle intelligent air conditioning control method based on fuzzy-adaptation PID control, wrap
Include following steps:
Step S110: the vehicle interior temperature of current vehicle is acquired；It can be adopted by the temperature sensor of setting in the car
Collect the temperature inside current vehicle.
Step S120: carrying out selection operating mode for the vehicle interior temperature of current vehicle compared with target temperature, when interior temperature
When degree is greater than target temperature, then refrigeration mode is selected, when vehicle interior temperature is less than target temperature, then selects heating mode；
Step S130: after selection refrigeration mode or heating mode, the temperature gap of vehicle interior temperature and target temperature is calculated；
When temperature gap is greater than the first preset value, then follow the steps S141: the operating power for exporting air-conditioning is air-conditioning
Maximum service rating；
When temperature gap is less than the second preset value, then follow the steps S142: the operating power for exporting air-conditioning is air-conditioning
Minimum operating power；
When temperature gap is greater than the second preset value less than the first preset value, then follow the steps S143: temperature gap is as PID
The input quantity of controller inputs, and exports the operating power of air-conditioning；
Step S150: control air-conditioning works according to the operating mode of selection and the operating power of output.Wherein, air-conditioning
Refrigeration mode realize that heating mode realized by heat exchanger by compressor, air-conditioning is according to the operating mode of selection
It carries out that corresponding device is selected to work according to the operating power that PID controller exports.
Firstly, occupant inputs its required target temperature, then adopted by the temperature sensor of setting in the car
The vehicle interior temperature for collecting current vehicle, vehicle interior temperature is compared with target temperature, when vehicle interior temperature is greater than target temperature, then
Select the operating mode of air-conditioning for refrigeration mode, when vehicle interior temperature be less than target temperature when, then select the operating mode of air-conditioning for
Refrigeration mode；If selecting refrigeration mode, the temperature gap of vehicle interior temperature and target temperature is calculated, if temperature gap is greater than first
Preset value is then controlled the compressor of air-conditioning and is worked with highest power, i.e., compressor is run with highest revolving speed, really
Protect makes interior temperature drop to ideal range with most fast rate, and then increases the comfort level of user, and if temperature gap
Less than the second preset value, then so that compressor is worked with minimum power, or stops the work of compressor, with energy saving,
Improve cruising ability；And work as temperature gap between the first preset value and the second preset value, then it is adjusted in real time by PID rule
Whole compressor rotary speed passes through formula: v using the temperature gap e of vehicle interior temperature and target temperature as the input quantity of PID controller
(t)=kp [e (t)+1/TI ∫ e (t) dt+TD*de (t)/dt], wherein kp, TI, TD are respectively pid parameter, and kp is proportionality constant,
T1 is integration time constant, and TD is derivative time constant；Pid parameter can be adjusted by experiment, export the work of compressor
The rate of doing work may finally reach good temperature control effect, and temperature is effectively controlled in a lesser range；
And when operating mode is heating mode, then the temperature gap of vehicle interior temperature and target temperature is calculated, if temperature gap is greater than the
One preset value is then controlled the heat exchanger of air-conditioning and is worked with highest power, it is ensured that makes interior temperature with most fast rate
Degree rises to ideal range, and then increases the comfort level of user, and if temperature gap makes heat exchange less than the second preset value
Device is worked with minimum power, or stops the work of heat exchanger, with energy saving, raising cruising ability；And work as temperature
Difference then carries out adjustment compressor rotary speed in real time by PID rule between the first preset value and the second preset value, by interior temperature
Input quantity of the temperature gap e of degree and target temperature as PID controller, passes through formula: v (t)=kp [e (t)+1/TI ∫ e (t)
Dt+TD*de (t)/dt] output heat exchanger operating power, the operating power that heat exchanger is exported according to PID controller carries out
Work；Temperature is effectively controlled in a lesser range.The lengthy and jumbled of control algolithm is reduced simultaneously, is lowered to control
The requirement of device, reduces manufacturing cost.Wherein, the first preset value is 7 DEG C, and the second preset value is 0.5 DEG C, can also be according to occupant
Needs be adjusted.
In the present embodiment, the comfort level of user is further increased, described " temperature gap that will be calculated is as PID
The input quantity of controller inputs, and exports the operating power of air-conditioning " further comprising the steps of later: according to outlet air coefficient of discharge to PID
The operating power of controller output carry out scaling, the final operating power of output air-conditioning, locating outlet air coefficient of discharge and air output at
Inverse ratio, value range are (0,1).Scaling is carried out to compressor horsepower by outlet air coefficient of discharge, wherein outlet air coefficient of discharge and outlet air
Amount is inversely proportional, and air output is that user can be adjusted according to its needs in Vehicular screen or entity button, and PID controller is logical
It crosses car borne gateway and obtains air output signal, outlet air coefficient of discharge is then converted by certain proportion, controlled as compressor horsepower PID
One of coefficient processed carries out calculating output air-conditioning by formula v (t)=a { kp [e (t)+1/TI ∫ e (t) dt+TD*de (t)/dt] }
Operating power, wherein a be outlet air coefficient of discharge, value range be (0,1), ensure that occupant selects the air quantity of oneself the most comfortable
Meanwhile not influencing refrigeration effect.
In the present embodiment, since the refrigeration effect of air-conditioning is also influenced by other factors, as outside temperature and sunlight are shone
The factors such as the amount of penetrating, the adaptability of PID controller, described " after selection refrigeration mode or heating mode, to calculate in order to further increase
The temperature gap of vehicle interior temperature and target temperature is inputted the temperature gap being calculated as the input quantity of PID controller, defeated
The operating power of air-conditioning out " specifically includes the following steps:
When selecting operating mode for refrigeration mode, then outside temperature and amount of sunlight are acquired, by the collecting vehicle of acquisition
The input of outer temperature and amount of sunlight as fuzzy controller, then fuzzy controller exports pid parameter；
PID controller is adjusted according to the pid parameter of output, then using the temperature gap being calculated as adjustment
The input quantity of PID controller afterwards inputs, and exports the operating power of air-conditioning.
When the operating mode selected is refrigeration mode, then outside temperature and amount of sunlight are acquired, it is fuzzy by introducing
Controller is carried out using the outside temperature of acquisition and amount of sunlight as the input quantity of fuzzy controller by fuzzy controller
The pid parameter that PID controller is exported after calculating carries out PID controller according to the pid parameter that fuzzy controller exports
It adjusts, then calculate to the temperature gap of input the operating power of output compressor, realize the fuzzy from whole of PID controller
It is fixed, the adaptability of PID controller is improved, helps to improve PID to the ability of temperature controlled accuracy and equilibrium temperature.
In the present embodiment, in order to further save the energy, the cruising ability of automobile, " the selection refrigeration mode are improved
Or after heating mode, the temperature gap of vehicle interior temperature and target temperature is calculated, using the temperature gap being calculated as PID control
The input quantity of device inputs, and exports the operating power of air-conditioning " further comprising the steps of later:
When operating mode is refrigeration mode, the speed of current vehicle and the revolving speed of compressor are acquired, by current vehicle
Input of the revolving speed of speed and compressor as fuzzy controller calculates the revolving speed of the radiator fan of output air-conditioning；
The radiator fan of control air-conditioning works according to the revolving speed of output.
The heat dissipation of air-conditioning is realized that the heat dissipation effect of radiator is by head-on wind wind speed and radiation air by radiator
Fan revolving speed influence, wherein the size of windward side wind speed is positively correlated with automobile speed, by acquisition current vehicle speed and
Then the revolving speed of compressor exports the revolving speed of radiator fan as the input of fuzzy controller, turned with the compressor being calculated
Speed and impact factor of the speed as radiating fan rotation speed consider head-on wind bring cooling effect in vehicle traveling process, real
When adjust rotation speed of the fan, be conducive to energy saving, further increase automobile course continuation mileage.
In the present embodiment, in order to avoid in the mode of heating automobile haze phenomenon, it is described " selection refrigeration mode or
After heating mode, the temperature gap of vehicle interior temperature and target temperature is calculated, using the temperature gap being calculated as PID controller
Input quantity input, export the operating power of air-conditioning " after it is further comprising the steps of:
When operating mode is heating mode, the humidity in collecting vehicle；
Judge whether the humidity of acquisition is greater than default humidity；
If more than default humidity, then controls air-conditioning and open dehumidification function.
When the operating mode of air-conditioning is heating mode, it is acquired the vehicle humidity of current vehicle, and judge currently
Whether vehicle humidity is greater than preset value, when if more than preset value, then opens the dehumidification function of control, when humidity is excessive, opens
Dehumidification function, avoiding hazing leads to dangerous generation.
Fig. 2-3 is please referred to, in another embodiment, a kind of vehicle intelligent air-conditioning system based on fuzzy-adaptation PID control,
It is characterized in that, including data acquisition device 210, processor 220, PID controller 230 and air-conditioning 240；
The data acquisition device 210 is used to acquire the vehicle interior temperature of current vehicle；Data acquisition device 210 includes setting
Temperature sensor in the car is acquired vehicle interior temperature by temperature sensor.
The processor 220 is used to the vehicle interior temperature of acquisition carrying out selection operating mode compared with target temperature, works as vehicle
When interior temperature is greater than target temperature, then refrigeration mode is selected, when vehicle interior temperature is less than target temperature, then selects heating mode；
After selecting refrigeration mode or heating mode, the temperature gap of vehicle interior temperature and target temperature is calculated；When temperature gap is greater than first
When preset value, then the operating power for exporting air-conditioning is the maximum service rating of air-conditioning；When temperature gap is less than the second preset value,
The operating power for then exporting air-conditioning is the minimum operating power of air-conditioning；It is preset when temperature gap is greater than the second preset value less than first
Value, then temperature gap is inputted as the input quantity of PID controller；
The PID controller 230 is used to export the operating power of air-conditioning according to the temperature difference of input；
The air-conditioning 240 according to the operating mode of selection and the operating power of output for working.
Firstly, occupant inputs its required target temperature, then adopted by the temperature sensor of setting in the car
The vehicle interior temperature for collecting current vehicle, vehicle interior temperature is compared with target temperature, when vehicle interior temperature is greater than target temperature, then
Select the operating mode of air-conditioning for refrigeration mode, when vehicle interior temperature be less than target temperature when, then select the operating mode of air-conditioning for
Refrigeration mode；If selecting refrigeration mode, the temperature gap of vehicle interior temperature and target temperature is calculated, if temperature gap is greater than first
Preset value is then controlled the compressor of air-conditioning and is worked with highest power, i.e., compressor is run with highest revolving speed, really
Protect makes interior temperature drop to ideal range with most fast rate, and then increases the comfort level of user, and if temperature gap
Less than the second preset value, then so that compressor is worked with minimum power, or stops the work of compressor, with energy saving,
Improve cruising ability；And work as temperature gap between the first preset value and the second preset value, then it is adjusted in real time by PID rule
Whole compressor rotary speed passes through formula: v using the temperature gap e of vehicle interior temperature and target temperature as the input quantity of PID controller
(t)=kp [e (t)+1/TI ∫ e (t) dt+TD*de (t)/dt], wherein kp, TI, TD are respectively pid parameter, and kp is proportionality constant,
T1 is integration time constant, and TD is derivative time constant；Pid parameter can be adjusted by experiment, export the work of compressor
The rate of doing work may finally reach good temperature control effect, and temperature is effectively controlled in a lesser range；
And when operating mode is heating mode, then the temperature gap of vehicle interior temperature and target temperature is calculated, if temperature gap is greater than the
One preset value is then controlled the heat exchanger of air-conditioning and is worked with highest power, it is ensured that makes interior temperature with most fast rate
Degree rises to ideal range, and then increases the comfort level of user, and if temperature gap makes heat exchange less than the second preset value
Device is worked with minimum power, or stops the work of heat exchanger, with energy saving, raising cruising ability；And work as temperature
Difference then carries out adjustment compressor rotary speed in real time by PID rule between the first preset value and the second preset value, by interior temperature
Input quantity of the temperature gap e of degree and target temperature as PID controller, passes through formula: v (t)=kp [e (t)+1/TI ∫ e (t)
Dt+TD*de (t)/dt] output heat exchanger operating power, the operating power that heat exchanger is exported according to PID controller carries out
Work；Temperature is effectively controlled in a lesser range.The lengthy and jumbled of control algolithm is reduced simultaneously, is lowered to control
The requirement of device, reduces manufacturing cost.Wherein, the first preset value is 7 DEG C, and the second preset value is 0.5 DEG C, can also be according to occupant
Needs be adjusted.
In the present embodiment, the comfort level of user is further increased, the processor is also used to according to outlet air coefficient of discharge pair
The operating power of PID controller output carries out scaling, the final operating power of output air-conditioning, locating outlet air coefficient of discharge and air output
It is inversely proportional, value range is (0,1).By outlet air coefficient of discharge to compressor horsepower carry out scaling, wherein outlet air coefficient of discharge with go out
Air quantity is inversely proportional, and air output is that user can be adjusted according to its needs in Vehicular screen or entity button, PID controller
Air output signal is obtained by car borne gateway, outlet air coefficient of discharge is then converted by certain proportion, as compressor horsepower PID
One of control coefrficient carries out calculating output sky by formula v (t)=a { kp [e (t)+1/TI ∫ e (t) dt+TD*de (t)/dt] }
The operating power of tune, wherein a is outlet air coefficient of discharge, and value range is (0,1), ensure that occupant selects the wind of oneself the most comfortable
Amount simultaneously, does not influence refrigeration effect.
In the present embodiment, since the refrigeration effect of air-conditioning is also influenced by other factors, as outside temperature and sunlight are shone
The factors such as the amount of penetrating, the adaptability of PID controller, further includes fuzzy controller 250 in order to further increase；The data acquisition dress
It sets 210 and is also used to acquire outside temperature and amount of sunlight；The outside temperature and sun that the fuzzy controller 250 is used to acquire
Then light irradiation amount exports pid parameter as input quantity；What the PID controller 230 was also used to be exported according to fuzzy controller
Pid parameter and temperature gap as input quantity, export the operating power of air-conditioning.Data acquisition device 210 includes being arranged in vehicle
Outer temperature sensor and solar radiation monitoring device, by vehicle outside temperature sensor be acquired outside temperature, by too
Positive radiation monitoring device is acquired amount of sunlight.
When the operating mode selected is refrigeration mode, then outside temperature and amount of sunlight are acquired, it is fuzzy by introducing
Controller 250, using the outside temperature of acquisition and amount of sunlight as the input quantity of fuzzy controller, by fuzzy controller into
Row exports the pid parameter of PID controller after calculating, the pid parameter that PID controller is exported according to fuzzy controller into
Row adjust, then to the temperature gap of input carry out calculate output compressor operating power, realize PID controller it is fuzzy from
Adjusting, improves the adaptability of PID controller, helps to improve PID to the ability of temperature controlled accuracy and equilibrium temperature.
In the present embodiment, in order to further save the energy, the cruising ability of automobile, the data acquisition device are improved
210 are also used to acquire the revolving speed of the speed of current vehicle and compressor；The fuzzy controller 250 is used for the vehicle of current vehicle
Input of the revolving speed of speed and compressor as fuzzy controller, calculates the revolving speed of the radiator fan of output air-conditioning；
The revolving speed control radiator fan work for the radiator fan that the air-conditioning is also used to be exported according to fuzzy controller.
The heat dissipation of air-conditioning is realized that the heat dissipation effect of radiator is by head-on wind wind speed and radiation air by radiator
Fan revolving speed influence, wherein the size of windward side wind speed is positively correlated with automobile speed, by acquisition current vehicle speed and
Then the revolving speed of compressor exports the revolving speed of radiator fan as the input of fuzzy controller, turned with the compressor being calculated
Speed and impact factor of the speed as radiating fan rotation speed consider head-on wind bring cooling effect in vehicle traveling process, real
When adjust rotation speed of the fan, be conducive to energy saving, further increase automobile course continuation mileage.
In the present embodiment, in order to avoid in the mode of heating automobile haze phenomenon, the data acquisition device is also
For being heating mode when operating mode, the humidity in collecting vehicle；Data acquisition device further includes that the humidity of setting in the car passes
Sensor is acquired the vehicle humidity of current vehicle by humidity sensor.
The processor is also used to judge whether the humidity of acquisition is greater than default humidity, then controls sky if more than default humidity
It tunes to open and opens dehumidification function.
When the operating mode of air-conditioning is heating mode, it is acquired the vehicle humidity of current vehicle, and judge currently
Whether vehicle humidity is greater than preset value, when if more than preset value, then opens the dehumidification function of control, when humidity is excessive, opens
Dehumidification function, avoiding hazing leads to dangerous generation.
It should be noted that being not intended to limit although the various embodiments described above have been described herein
Scope of patent protection of the invention.Therefore, it based on innovative idea of the invention, change that embodiment described herein is carried out and is repaired
Change, or using equivalent structure or equivalent flow shift made by description of the invention and accompanying drawing content, it directly or indirectly will be with
Upper technical solution is used in other related technical areas, is included within scope of patent protection of the invention.
Claims (10)
1. a kind of vehicle intelligent air conditioning control method based on fuzzy-adaptation PID control, which comprises the following steps:
Acquire the vehicle interior temperature of current vehicle；
The vehicle interior temperature of current vehicle is subjected to selection operating mode compared with target temperature, when vehicle interior temperature is greater than target temperature
When, then refrigeration mode is selected, when vehicle interior temperature is less than target temperature, then selects heating mode；
After selecting refrigeration mode or heating mode, the temperature gap of vehicle interior temperature and target temperature is calculated；
When temperature gap is greater than the first preset value, then the operating power for exporting air-conditioning is the maximum service rating of air-conditioning；
When temperature gap is less than the second preset value, then the operating power for exporting air-conditioning is the minimum operating power of air-conditioning；
When temperature gap is greater than the second preset value less than the first preset value, then temperature gap is defeated as the input quantity of PID controller
Enter, exports the operating power of air-conditioning；
Control air-conditioning works according to the operating mode of selection and the operating power of output.
2. the vehicle intelligent air conditioning control method based on fuzzy-adaptation PID control according to claim 1, which is characterized in that described
Further include after " being inputted the temperature gap being calculated as the input quantity of PID controller, export the operating power of air-conditioning "
Following steps:
Scaling, the final operating power of output air-conditioning, institute are carried out to the operating power that PID controller exports according to outlet air coefficient of discharge
Place's outlet air coefficient of discharge is inversely proportional with air output, and value range is (0,1).
3. the vehicle intelligent air conditioning control method based on fuzzy-adaptation PID control according to claim 1, which is characterized in that described
" after selection refrigeration mode or heating mode, calculate the temperature gap of vehicle interior temperature and target temperature, the temperature difference that will be calculated
It is worth and is inputted as the input quantity of PID controller, exports the operating power of air-conditioning " specifically includes the following steps:
When selecting operating mode for refrigeration mode, then outside temperature and amount of sunlight are acquired, it will be warm outside the collecting vehicle of acquisition
The input of degree and amount of sunlight as fuzzy controller, then fuzzy controller exports pid parameter；
PID controller is adjusted according to the pid parameter of output, then using the temperature gap being calculated as adjusted
The input quantity of PID controller inputs, and exports the operating power of air-conditioning.
4. the vehicle intelligent air conditioning control method based on fuzzy-adaptation PID control according to claim 1, which is characterized in that described
" after selection refrigeration mode or heating mode, calculate the temperature gap of vehicle interior temperature and target temperature, the temperature difference that will be calculated
It is worth and is inputted as the input quantity of PID controller, exports the operating power of air-conditioning " further comprising the steps of later:
When operating mode is refrigeration mode, the speed of current vehicle and the revolving speed of compressor are acquired, by the speed of current vehicle
And input of the revolving speed of compressor as fuzzy controller, calculate the revolving speed of the radiator fan of output air-conditioning；
The radiator fan of control air-conditioning works according to the revolving speed of output.
5. the vehicle intelligent air conditioning control method based on fuzzy-adaptation PID control according to claim 1, which is characterized in that described
" after selection refrigeration mode or heating mode, calculate the temperature gap of vehicle interior temperature and target temperature, the temperature difference that will be calculated
It is worth and is inputted as the input quantity of PID controller, exports the operating power of air-conditioning " further comprising the steps of later:
When operating mode is heating mode, the humidity in collecting vehicle；
Judge whether the humidity of acquisition is greater than default humidity；
If more than default humidity, then controls air-conditioning and open dehumidification function.
6. a kind of vehicle intelligent air-conditioning system based on fuzzy-adaptation PID control, which is characterized in that including data acquisition device, processing
Device, PID controller and air-conditioning；
The data acquisition device is used to acquire the vehicle interior temperature of current vehicle；
The processor is used to the vehicle interior temperature of acquisition carrying out selection operating mode compared with target temperature, when vehicle interior temperature is big
When target temperature, then refrigeration mode is selected, when vehicle interior temperature is less than target temperature, then selects heating mode；Selection refrigeration
After mode or heating mode, the temperature gap of vehicle interior temperature and target temperature is calculated；When temperature gap is greater than the first preset value,
The operating power for then exporting air-conditioning is the maximum service rating of air-conditioning；When temperature gap is less than the second preset value, then sky is exported
The operating power of tune is the minimum operating power of air-conditioning；It is when temperature gap is greater than the second preset value less than the first preset value, then warm
The input quantity for spending difference as PID controller inputs；
The PID controller is used to export the operating power of air-conditioning according to the temperature difference of input；
The air-conditioning according to the operating mode of selection and the operating power of output for working.
7. the vehicle intelligent air-conditioning system based on fuzzy-adaptation PID control according to claim 6, which is characterized in that the processing
Device is also used to carry out scaling, the final work function of output air-conditioning to the operating power that PID controller exports according to outlet air coefficient of discharge
Rate, locating outlet air coefficient of discharge are inversely proportional with air output, and value range is (0,1).
8. the vehicle intelligent air-conditioning system based on fuzzy-adaptation PID control according to claim 6, which is characterized in that further include mould
Fuzzy controllers；
The data acquisition device is also used to acquire outside temperature and amount of sunlight；
Then the outside temperature and amount of sunlight that the fuzzy controller is used to acquire export pid parameter as input quantity；
The PID controller is also used to according to the pid parameter of fuzzy controller output and as the temperature gap of input quantity, output
The operating power of air-conditioning.
9. the vehicle intelligent air-conditioning system based on fuzzy-adaptation PID control according to claim 6, which is characterized in that further include mould
Fuzzy controllers；
The data acquisition device is also used to acquire the speed of current vehicle and the revolving speed of compressor；
The fuzzy controller is calculated for the input using the revolving speed of the speed of current vehicle and compressor as fuzzy controller
Export the revolving speed of the radiator fan of air-conditioning；
The revolving speed control radiator fan work for the radiator fan that the air-conditioning is also used to be exported according to fuzzy controller.
10. the vehicle intelligent air-conditioning system based on fuzzy-adaptation PID control according to claim 6, which is characterized in that the data
Acquisition device is also used to when operating mode be heating mode, the humidity in collecting vehicle；
The processor is also used to judge whether the humidity of acquisition is greater than default humidity, then controls air-conditioning if more than default humidity and opens
Open dehumidification function.
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